xmaojian Posted November 23, 2021 Share Posted November 23, 2021 Hi everyone, I bought a lenovo ideapad 3-14 salc laptop a week ago(AMD R-5-5500U,Vega 6,Phoenix bios type,1.8V 16MB 128Mbit dip-8 bios chip). I want to use the advanced options and legacy boot support in the bios settings. It is said that this requires unlocking the bios files. I don’t know what to do, can you help me? my laptop bios file backup(used Minpro-1 programmer,all support 3.3V and 1.8V bios chip):https://mega.nz/file/R2IFiI6K#w1rcC-_d5cyVeFEvvPHLvVCdqw2ci9SsDtMacc7q6Bg my laptop bios file (Lenovo official):https://mega.nz/file/pvgTTKTC#IL6vJNVJknLhHUrQd-UjYlEI9gEjn5Jq9wC2KY60gYs —————————————————————————————————————————————————————————— In addition, I also thought of some methods myself, such as using the tools in the link below: GitHub - datasone/grub-mod-setup_var: A modified grub allowing tweaking hidden BIOS settings. I tried to use this tool to modify the bios hidden settings,It seems to be able to open the “csm support” option.In the end, I still failed, There is no legacy boot item in the bootmenu (press F12 when starting), and I can’t start from uefi mode after the modification, I can only use the Minpro-1 programmer flashing back to the backup bios file,The computer was saved. Finally, I also found a tool: https://mega.nz/file/F64jlKrI#DnSi7uI3x0wAzUvsCbXhV9JpWEGpAqL8z0AttMj1QBw(chaboot Ver216,Lenovo official): When I used this tool, the options of uefi and legacy options appeard in bios,But it didn’t seem to have any practical effect. Quote Link to comment Share on other sites More sharing options...
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